The non-white, young, non-male variables are the more accurate predictors.
The Catholic vote was predictable long before mass immigration from the world’s most Catholic countries, as white Catholics leave Catholicism and are replaced by Hispanics, the Catholic vote remains what it has been historically in America.
The Catholic vote and the Protestant vote have always been predictable.
The Catholic vote has gone republican about 5 times in history, and the Protestant vote has gone democrat 3 times, 1932, 1936, 1964.